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RS485 Communication Protocol
For the transfer of commands, see the instructions of the controller.
RS485 communication is possible with Servo Ready output ON.
The following flow chart shows the communication when RSW(ID) = 1.
Start of transfer
81h sent
05h sent
81h received
04h received
The controller
requests the
driver to send
00h sent
absolute data.
01h sent
D2h sent
2Dh sent
06h received
80h received
05h received
The controller
The controller
The controller
80h sent
receives absolute
receives absolute
receives absolute
04h sent
data from the driver.
data from the driver.
data from the driver.
Absolute data
received
(15 characters)
Checksum OK
06h sent
End of transfer
The host sends the command to the desired driver according to the RS485
communication protocol.
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＊1
N
＊1 ＊1
Y
＊2
＊3
N
Y
N
Y
N
Y
15h sent
*1, *2 and *3 data depend on the value of
RSW(ID) on the LED touch panel.
RSW （ID）
*1 data
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Checksum: OK if the value of the lowest
8 bits of the sum of the received
absolute data (15 characters) is 0.
− App. 25 −
*2 data
RS485 is not available
81h
01h
82h
02h
83h
03h
84h
04h
85h
05h
86h
06h
87h
07h
88h
08h
89h
09h
8Ah
0Ah
8Bh
0Bh
8Ch
0Ch
8Dh
0Dh
8Eh
0Eh
8Fh
0Fh
*3 data
2Dh
2Ch
2Bh
2Ah
29h
28h
27h
26h
25h
24h
23h
22h
21h
20h
1Fh
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